飯卡java代碼 飯卡系統(tǒng)

緊急求助有關(guān)JAVA編程問(wèn)題，編出給高分

樓上說(shuō)的對(duì)啊，時(shí)間問(wèn)題，祝你好運(yùn)啦！

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PS：樓主不是我說(shuō)你，這事早干嘛了~~

1用JAVA語(yǔ)言編寫(xiě)程序，實(shí)現(xiàn)圖形化界面的學(xué)生成績(jī)（學(xué)號(hào)，姓名，科目，成績(jī)）管理系統(tǒng)。

這種東西已涉及到商業(yè)利益，沒(méi)人愿意幫你吧！都想你這樣別人都沒(méi)錢(qián)賺啦

JAVA 這個(gè)東西怎么做？

package?javaapplication26;

import?java.awt.*;

import?java.awt.event.*;

import?javax.swing.*;

//?Import?the?Java?classes

import?java.util.*;

import?javax.swing.border.EmptyBorder;

/**

*?A?JOutlookBar?provides?a?component?that?is?similar?to?a?JTabbedPane,?but?instead?of?maintaining

*?tabs,?it?uses?Outlook-style?bars?to?control?the?visible?component

*/

public?class?JOutlookBar?extends?JPanel?implements?ActionListener?{

private?JPanel?topPanel?=?new?JPanel(new?GridLayout(1,?1));

private?JPanel?bottomPanel?=?new?JPanel(new?GridLayout(1,?1));

/**

*?A?LinkedHashMap?of?bars:?we?use?a?linked?hash?map?to?preserve?the?order?of?the?bars

*/

private?Map?bars?=?new?LinkedHashMap();

/**

*?The?currently?visible?bar?(zero-based?index)

*/

private?int?visibleBar?=?0;

/**

*?A?place-holder?for?the?currently?visible?component

*/

private?JComponent?visibleComponent?=?null;

/**

*?Creates?a?new?JOutlookBar;?after?which?you?should?make?repeated?calls?to

*?addBar()?for?each?bar

*/

public?JOutlookBar()?{

this.setLayout(new?BorderLayout());

this.add(topPanel,?BorderLayout.NORTH);

this.add(bottomPanel,?BorderLayout.SOUTH);

}

public?void?addBar(String?name,?JComponent?component)?{

BarInfo?barInfo?=?new?BarInfo(name,?component);

barInfo.getButton().addActionListener(this);

this.bars.put(name,?barInfo);

render();

}

/**

*?Adds?the?specified?component?to?the?JOutlookBar?and?sets?the?bar's?name

*

*?@param??name??????The?name?of?the?outlook?bar

*?@param??icon??????An?icon?to?display?in?the?outlook?bar

*?@param??componenet???The?component?to?add?to?the?bar

*/

public?void?addBar(String?name,?Icon?icon,?JComponent?component)?{

BarInfo?barInfo?=?new?BarInfo(name,?icon,?component);

barInfo.getButton().addActionListener(this);

this.bars.put(name,?barInfo);

render();

}

/**

*?Removes?the?specified?bar?from?the?JOutlookBar

*

*?@param??name??The?name?of?the?bar?to?remove

*/

public?void?removeBar(String?name)?{

this.bars.remove(name);

render();

}

/**

*?Returns?the?index?of?the?currently?visible?bar?(zero-based)

*

*?@return?The?index?of?the?currently?visible?bar

*/

public?int?getVisibleBar()?{

return?this.visibleBar;

}

/**

*?Programmatically?sets?the?currently?visible?bar;?the?visible?bar

*?index?must?be?in?the?range?of?0?to?size()?-?1

*

*?@param??visibleBar???The?zero-based?index?of?the?component?to?make?visible

*/

public?void?setVisibleBar(int?visibleBar)?{

if?(visibleBar??0?

visibleBar??this.bars.size()?-?1)?{

this.visibleBar?=?visibleBar;

render();

}

}

/**

*?Causes?the?outlook?bar?component?to?rebuild?itself;?this?means?that

*?it?rebuilds?the?top?and?bottom?panels?of?bars?as?well?as?making?the

*?currently?selected?bar's?panel?visible

*/

public?void?render()?{

//?Compute?how?many?bars?we?are?going?to?have?where

int?totalBars?=?this.bars.size();

int?topBars?=?this.visibleBar?+?1;

int?bottomBars?=?totalBars?-?topBars;

//?Get?an?iterator?to?walk?through?out?bars?with

Iterator?itr?=?this.bars.keySet().iterator();

//?Render?the?top?bars:?remove?all?components,?reset?the?GridLayout?to

//?hold?to?correct?number?of?bars,?add?the?bars,?and?"validate"?it?to

//?cause?it?to?re-layout?its?components

this.topPanel.removeAll();

GridLayout?topLayout?=?(GridLayout)?this.topPanel.getLayout();

topLayout.setRows(topBars);

BarInfo?barInfo?=?null;

for?(int?i?=?0;?i??topBars;?i++)?{

String?barName?=?(String)?itr.next();

barInfo?=?(BarInfo)?this.bars.get(barName);

this.topPanel.add(barInfo.getButton());

}

this.topPanel.validate();

//?Render?the?center?component:?remove?the?current?component?(if?there

//?is?one)?and?then?put?the?visible?component?in?the?center?of?this?panel

if?(this.visibleComponent?!=?null)?{

this.remove(this.visibleComponent);

}

this.visibleComponent?=?barInfo.getComponent();

this.add(visibleComponent,?BorderLayout.CENTER);

//?Render?the?bottom?bars:?remove?all?components,?reset?the?GridLayout?to

//?hold?to?correct?number?of?bars,?add?the?bars,?and?"validate"?it?to

//?cause?it?to?re-layout?its?components

this.bottomPanel.removeAll();

GridLayout?bottomLayout?=?(GridLayout)?this.bottomPanel.getLayout();

bottomLayout.setRows(bottomBars);

for?(int?i?=?0;?i??bottomBars;?i++)?{

String?barName?=?(String)?itr.next();

barInfo?=?(BarInfo)?this.bars.get(barName);

this.bottomPanel.add(barInfo.getButton());

}

this.bottomPanel.validate();

this.validate();

}

/**

*?Invoked?when?one?of?our?bars?is?selected

*/

public?void?actionPerformed(ActionEvent?e)?{

/*??int?currentBar?=?0;

for?(Iterator?i?=?this.bars.keySet().iterator();?i.hasNext();)?{

String?barName?=?(String)?i.next();

BarInfo?barInfo?=?(BarInfo)?this.bars.get(barName);

if?(barInfo.getButton()?==?e.getSource())?{

//?Found?the?selected?button

this.visibleBar?=?currentBar;

render();

return;

}

currentBar++;

}*/

BarInfo?barInfo?=?(BarInfo)?this.bars.get("員工管理");

if?(barInfo.getButton()?==?e.getSource())?{

this.visibleBar?=?0;

render();

return;

}

}

/**

*?Debug,?dummy?method

*/

public?static?JPanel?getDummyPanel(String?name)?{

JPanel?panel?=?new?JPanel(new?BorderLayout());

panel.add(new?JLabel(name,?JLabel.CENTER));

return?panel;

}

public?static?JPanel?getEmployeePanel()?{

GridBagLayout?gbl?=?new?GridBagLayout();

GridBagConstraints?gbc?=?new?GridBagConstraints();

JPanel?panel?=?new?JPanel(gbl);

panel.setBorder(new?EmptyBorder(12,?12,?0,?11));

gbc.gridx?=?0;

gbc.gridy?=?0;

gbc.insets?=?new?Insets(0,?0,?0,?5);

gbc.anchor?=?GridBagConstraints.EAST;

panel.add(new?JMenuItem(new?addEmployeeInfoAction()),?gbc);

gbc.gridy++;

gbc.insets?=?new?Insets(0,?0,?0,?5);

gbc.anchor?=?GridBagConstraints.EAST;

panel.add(new?JMenuItem(new?modifyEmployeeInfoAction()),?gbc);

gbc.gridy++;

gbc.insets?=?new?Insets(0,?0,?0,?5);

gbc.anchor?=?GridBagConstraints.EAST;

panel.add(new?JMenuItem(new?searchEmployeeInfoAction()),?gbc);

gbc.gridy++;

gbc.insets?=?new?Insets(0,?0,?0,?5);

gbc.anchor?=?GridBagConstraints.EAST;

panel.add(new?JMenuItem(new?deleteEmployeeInfoAction()),?gbc);

return?panel;

}

/**

*?Debug?test...

*/

public?static?void?main(String[]?args)?{

JFrame?frame?=?new?JFrame("學(xué)生信息管理");

JOutlookBar?outlookBar?=?new?JOutlookBar();

//outlookBar.addBar(TOOL_TIP_TEXT_KEY,?component)

outlookBar.addBar("員工管理",?getEmployeePanel());

//?outlookBar.add

outlookBar.addBar("飯卡管理",?getDummyPanel(""));

outlookBar.addBar("銷(xiāo)售管理",?getDummyPanel(""));

//??outlookBar.addBar(?"Four",?getDummyPanel(?"Four"?)?);

//???outlookBar.addBar(?"Five",?getDummyPanel(?"Five"?)?);

outlookBar.setVisibleBar(2);

frame.getContentPane().add(outlookBar);

frame.setSize(200,?400);

Dimension?d?=?Toolkit.getDefaultToolkit().getScreenSize();

frame.setLocation(d.width?/?2?-?400,?d.height?/?2?-?300);

frame.setVisible(true);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

/**

*?Internal?class?that?maintains?information?about?individual?Outlook?bars;

*?specifically?it?maintains?the?following?information:

*

*?name??????The?name?of?the?bar

*?button?????The?associated?JButton?for?the?bar

*?component????The?component?maintained?in?the?Outlook?bar

*/

class?BarInfo?{

/**

*?The?name?of?this?bar

*/

private?String?name;

/**

*?The?JButton?that?implements?the?Outlook?bar?itself

*/

private?JButton?button;

/**

*?The?component?that?is?the?body?of?the?Outlook?bar

*/

private?JComponent?component;

/**

*?Creates?a?new?BarInfo

*

*?@param??name????The?name?of?the?bar

*?@param??component??The?component?that?is?the?body?of?the?Outlook?Bar

*/

public?BarInfo(String?name,?JComponent?component)?{

this.name?=?name;

this.component?=?component;

this.button?=?new?JButton(name);

}

/**

*?Creates?a?new?BarInfo

*

*?@param??name????The?name?of?the?bar

*?@param??icon????JButton?icon

*?@param??component??The?component?that?is?the?body?of?the?Outlook?Bar

*/

public?BarInfo(String?name,?Icon?icon,?JComponent?component)?{

this.name?=?name;

this.component?=?component;

this.button?=?new?JButton(name,?icon);

}

public?String?getName()?{

return?this.name;

}

/**

*?Sets?the?name?of?the?bar

*

*?@param??The?name?of?the?bar

*/

public?void?setName(String?name)?{

this.name?=?name;

}

public?JButton?getButton()?{

return?this.button;

}

public?JComponent?getComponent()?{

return?this.component;

}

}

}

class?addEmployeeInfoAction?extends?AbstractAction?{

{

putValue(Action.SHORT_DESCRIPTION,?"heool");

putValue(Action.NAME,?"添加員工信息");

putValue(Action.LONG_DESCRIPTION,?"Name?this?element.");

putValue(Action.MNEMONIC_KEY,

new?Integer(java.awt.event.KeyEvent.VK_L));

}

public?void?actionPerformed(ActionEvent?e)?{

JDialog?dialog?=?new?JDialog();

dialog.setName("Message");

dialog.setVisible(true);

//throw?new?UnsupportedOperationException("Not?supported?yet.");

}

}

class?modifyEmployeeInfoAction?extends?AbstractAction?{

{

putValue(Action.SHORT_DESCRIPTION,?"heool");

putValue(Action.NAME,?"修改員工信息");

putValue(Action.LONG_DESCRIPTION,?"Name?this?element.");

putValue(Action.MNEMONIC_KEY,

new?Integer(java.awt.event.KeyEvent.VK_L));

}

public?void?actionPerformed(ActionEvent?e)?{

JDialog?dialog?=?new?JDialog();

dialog.setName("Message");

dialog.setVisible(true);dialog.setSize(100,?100);

//throw?new?UnsupportedOperationException("Not?supported?yet.");

}

}

class?searchEmployeeInfoAction?extends?AbstractAction?{

{

putValue(Action.SHORT_DESCRIPTION,?"heool");

putValue(Action.NAME,?"查詢員工信息");

putValue(Action.LONG_DESCRIPTION,?"Name?this?element.");

putValue(Action.MNEMONIC_KEY,

new?Integer(java.awt.event.KeyEvent.VK_L));

}

public?void?actionPerformed(ActionEvent?e)?{

JDialog?dialog?=?new?JDialog();

dialog.setName("Message");

dialog.setVisible(true);

//throw?new?UnsupportedOperationException("Not?supported?yet.");

}

}

class?deleteEmployeeInfoAction?extends?AbstractAction?{

{

putValue(Action.SHORT_DESCRIPTION,?"heool");

putValue(Action.NAME,?"刪除員工信息");

putValue(Action.LONG_DESCRIPTION,?"Name?this?element.");

putValue(Action.MNEMONIC_KEY,

new?Integer(java.awt.event.KeyEvent.VK_L));

}

public?void?actionPerformed(ActionEvent?e)?{

JDialog?dialog?=?new?JDialog();

dialog.setName("Message");

dialog.setVisible(true);dialog.setVisible(true);

//點(diǎn)擊對(duì)應(yīng)的操作

//throw?new?UnsupportedOperationException("Not?supported?yet.");

}

}

程序沿用到樓上的那個(gè)模板，不過(guò)有些地方很毛糙，你自己在修改一下，比方說(shuō)對(duì)事件的定義還有對(duì)那幾個(gè)選項(xiàng)的位置等你自己再修改一下

求java實(shí)現(xiàn)的飯卡管理系統(tǒng)能連接數(shù)據(jù)庫(kù)使用

答案voidmain(){intsele=1,t;floatx;system("cls");printf("歡迎使用簡(jiǎn)易菜單!本菜單在VC++平臺(tái)編譯通過(guò)\n");printf("有何建議請(qǐng)聯(lián)系本人!\n");printf("成績(jī)管理菜單\n");printf("\n");printf("1.輸入成績(jī)2.計(jì)算總分3.求平均值4.輸出總分與平均5.清理屏幕6.高低排列7.上平均分人數(shù)0.退出8.全部情況:總分平均分第一名及格人數(shù)");scanf("%d",sele);puts("");if(sele=0sele1.輸入成績(jī)2.計(jì)算總分3.求平均值4.輸出總分與平均5.清理屏幕6.高低排列7.上平均分人數(shù)0.退出8.全部情況:總分平均分第一名及格人數(shù)\n");break;case6:gaodi(a);break;case7:super(a);break;case8:full(t,x);break;}elseprintf("你的輸入有誤,請(qǐng)重新:")

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